Steam-boiler.



M. KELLY STEAM BOILER.

APPLICATION FILED 11112.31. 1911.

1,018,425, Patentd F8b.27, 1912.

COLUMBIA PLANOURAPH co.,wumm1-on,n: c.

UNITED STATES PATENT OFFICE.

MICHAEL KELLY, 0F BUFFALO, NEW YORK.

STEAM-BOILER.

To all whom it may concern:

Be it known that I, MICHAEL KELLY, a citizen of the United States, and resident of Buffalo, in the county of Erie and State of New York, have invented new and useful Improvements in Steam-Boilers, of which the following is a specification.

This invention relates to a steam boiler and has the object to provide a boiler for this purpose in which the sections are so constructed that the steam or water of lower temperature is permitted to separate from the water of lower temperature with the greatest freedom and thus enable hot water to be produced rapidly or steam to be generated quickly and with a minimum expenditure of fuel.

In the accompanying drawings: Figure 1 is a vertical transverse section of a steam boiler embodying my invention. Fig. 2 is a vertical longitudinal section of the same in line 22, Fig. 1. Fig. 3 is a fragmentary cross section in line 3'3, Fig. 1. Fig. 4 is a fragmentary sectional perspective view of the cross pipe of one of the boiler sections.

Similar letters of reference indicate corresponding parts throughout the several views.

1 represents the housing of the boiler containing the furnace and 2 the grate arranged below the furnace.

Within the housing and above the grate is arranged a group of generator sections which are arranged in a longitudinal row and each of which comprises two upright hollow legs or columns 3, 3 arranged on opposite sides of the furnace, and*a hollow arch 4 connecting the upper ends of the legs. The several sections communicate with each other by registering nipples 5 and the same are tied together by a plurality of horizontal tie rods 6 passing preferably through the nipples.

Below the arch of each generator section the legs thereof are connected by a hollow cross pipe 7 which communicates at its ends with the legs and which is connected at its central part with the central part of the companion arch by an upright hollow column or pipe 8.

The cross pipe is preferably contracted so that the same is oblong in cross section and arranged with its wide or flat sides vertically. On its opposite fiat sides the cross pipe is provided with two hori zontal rows of corrugations or hollow wings 9 which are elongated vertically and open Specification of Letters Patent.

Application filed March 31, 1911.

Patented Feb. 27, 1912.

Serial No. 618,171.

into the interior of the cross pipe. These wings do not extend to the upper and lower sides of the cross pipe but terminate at their upper and lower ends short of the top and bottom of this pipe, thereby leaving a straight or unbroken horizontal conduit or runway 11 for the water in the lower part of each cross pipe and a straight or unbroken horizontal conduit or runway 10 for the steam in the upper part of the cross pipe. It follows from this construction that the water of lower temperature flows freely in the lower part of each cross pipe and is supplied to the wings without meeting any obstructions.

Upon entering the wings the water owing to its divided condition is rapidly raised in temperature or converted into steam which escapes to the top of the cross pipe and is then conducted by the upper part of the cross pipe to the central upright pipe without encountering any obstruction, thereby facilitating the escape of the steam or water of higher temperature to the top of the generator section. By this means the water is heated to a higher temperature, steam is generated more rapidly and with less consumption of fuel, thereby enabling a smaller boiler to be used for producing a given amount of hot water or steam and econ0 mizing in fuel.

For the purpose of permitting the central pipe to expand and contract freely in adapting itself to changes of temperature without liability of fracturing the same this pipe is provided with corrugations 12 arranged transversely of its length.

I claim as my invention:

1. A steam boiler comprising a sect-ion having upright hollow columns at its opposite sides, a hollow arch connecting the upper ends of said columns, and a horizontal hollow pipe connecting said columns below the arch and provided on its opposite sides with horizontal rows of laterally projecting hollow wings which terminate short of the top and bottom of said pipe leaving a straight low temperature water supply runway or hollow columns, a hollow transverse arch.

connecting the upper ends of said columns, a horizontal cross pipe connecting the 001- umns below said arch and provided on its I umn connecting the central parts of said underside with a contracted longitudinal cross pipe and arch. 10 channel forming a low temperature Water Witness my hand this 23rd day of March, conduit and on its upper side with a contract 1911.

5 ed longitudinal channel forming a high tem- MICHAEL KELLY.

perature or steam conduit and provided on Witnesses: laterally opposite sides with hollow Wings 1 E. M. GRAHAM, or corrugations, and an upright hollow col- ANNA HEIGISQ Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

